Despite having bat-like wings, two small dinosaurs, Yi and Ambopteryx, struggled to fly, only managing to glide clumsily between the trees where they lived, researchers report today (October 22, 2020) in the journal iScience. Unable to compete with other tree-dwelling dinosaurs and early birds, they
Source: These Two Bird-Sized Dinosaurs Evolved Bat-Like Wings, but Struggled to Fly
Darwiniana 